
function checkUser(){
$.ajax({
	url:"/mynb/checkUser.action",
	data:"",
	type: "post",
	dataType: "json",
	contentType: "application/json;chartset=utf-8",
	cache:false,
	success:function (data){	
		alert(data.total);
	},
	error:function (xhr) {
		alert("error");
	}
});

return false;
}